题目内容
17．Thousands of years ago，it was common to see many stars in the sky．However，this changed with the （61）invention （invent） of electricity．Cities have gone（62）brighter（bright），using more lights．And that means most people in urban areas will never see beautiful groups of stars．They will never see a （63）natural（nature） night sky and never be inspired by it．Today，people（64）are surrounded（surround） by light-even at night time．Much of this light travels where it shouldn't be-it creates light pollution．For example，a person can put（65）a light outside to shine on his own house．But the light could be so strong that it may also shine on his neighbor's house．The extra light（66）shining （shine） on the neighbor's house is one of light pollution．
But is all this light （67）really （real） a big problem？People need light to see，work and drive safely at night．But scientists say that this extra light has proven（68）effects（effect） on living creatures．One kind of animal influenced by light pollution is birds，（69）which travel to a different area to lay eggs，usually at night．But lights from tall buildings can lead them（70）off their path．
分析 文章介绍了光污染的危害以及应对措施．
解答 61．invention 考查名词．随着电的发明，invention是名词"发明"．
62．brighter 考查形容词比较级．有了电灯城市比以前更亮了，brighter是形容词"明亮的"比较级．
63．natural 考查形容词．由于到处都是光源，人们再也看不到"自然的（natural）"星空．
64．are surrounded 考查被动语态．现如今，人们的周围"到处都是（surrounded）"灯光．people与surround之间是被动关系，所以填are surrounded．
65．a 考查冠词．一个人一个房子点一盏灯，所以用a．
66．shining 考查非谓语．此处考查现在分词做定语修饰light，意思是"照耀在邻居房子上的光"，light与shine之间是主谓关系，所以答案填shining．
67．really 考查副词．句意：但这一切的光真是一个大问题．really是副词"实际上，事实上"．
68．effects 考查固定搭配．have effects on 或者have an effect on 是固定搭配"对…有影响"，句意：这种额外的光线已经证明对生物有影响．
69．which 考查定语从句．这是一个非限制性定语从句，which指代前边的birds，在从句中做主语，所以用which来引导．
70．off 考查副词．但是高楼上的灯光会引导他们离开他们的道路．off副词"离开"．
点评 语法填空题是考查学生的语言运用能力．解题时，要在理解文章的基础上，灵活运用语法知识，如词性，时态，名词单复数，连接词，代词，冠词等判断空白处应填写的内容．答完后，还要通读全文，核对所填单词 形式是否正确，是否符合语境．
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